Epstein–Barr Virus Antibody Titers Are Not Associated with Gastric Cancer Risk in East Asia
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Epstein–Barr virus (EBV)-positive gastric cancers represent a distinct subtype of gastric cancers and account for nearly 10% of the gastric cancer burden, yet risk detection strategies for this cancer subtype are lacking.
We conducted a nested case–control study where we assayed 4 EBV antigens [viral capsid antigen (VCA), early antigen (EA), Epstein–Barr nuclear antigen (EBNA), and BZLF1-encoded replication activator protein (ZEBRA)] in either sera or plasma from 1447 gastric cancer cases and 1797 controls obtained from seven prospective cohorts representing individuals from the high gastric cancer-risk countries of China, Japan, and Korea.
The prevalence of EBV sero-positivity was universal with the exception of one sero-negative individual, and the highest titers of the EBV antigens VCA (OR 0.95, 95% CI 0.78–1.17), EBNA (OR 0.88, 95% CI 0.72–1.08), EA (OR 0.97, 95% CI 0.79–1.19), and ZEBRA (OR 0.87, 95% CI 0.71–1.07) were not associated with risk of incident gastric cancer. When we stratified these data by H. pylori status, there was no change in the association.
Multiplex serology of the aforementioned EBV antigens in serum may not be a suitable biomarker for predicting gastric cancer risk in East Asian populations.
KeywordsEpstein–Barr virus Gastric cancer Multiplex serology
This work was supported by the National Institute of Health and the National Cancer Institute R01CA174853 (M. Epplein) and the Molecular and Genetic Epidemiology of Cancer Fellowship R25CA160056 (X.-O. Shu, P. I. and M. G. Varga, Trainee) and the Cancer Control Education Program 2T32CA057726-26 (K. Ribisl, P. I. and M. G. Varga, Trainee). The Shanghai Men’s and Women’s studies were supported by Grants from the National Cancer Institute (R37 CA070867 and UM1 CA182910 to W. Zheng; R01 CA082729 and UM1 CA 173640 to X.-O. Shu).
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Conflict of interest
The authors declare no conflict of interest.
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